Genetic diversity and selection signatures of the beef 'Charolais de Cuba' breed
Rodriguez-Valera, Yoel (Universidad de Granma. Facultad de Ciencias Agropecuarias)
Renand, Gilles (Institut national de la recherche agronomique (França). Génétique Animale et Biologie Intégrative)
Naves, Michel (Institut National de la Recherche Agronomique (França))
Fonseca-Jiménez, Yidix (Universidad de Granma. Facultad de Ciencias Agropecuarias)
Moreno-Probance, Teresa Inés (Empresa de Mejora Genética Manuel Fajardo (Cuba))
Ramos-Onsins, Sebastian (Centre de Recerca en Agrigenòmica)
Rocha, Dominique (Institut national de la recherche agronomique (França). Génétique Animale et Biologie Intégrative)
Ramayo-Caldas, Yuliaxis (Universitat Autònoma de Barcelona. Departament de Ciència Animal i dels Aliments)

Data:	2018
Resum:	In this study, we used BovineSNP50 Genotyping BeadChip data to estimate the structure, putative ancestral origin as well as to identify regions with selective sweeps that may have had an important role in the adaptation to tropical conditions of the 'Charolais de Cuba' (CHCU) breed. According to a principal component analysis, CHCU samples cluster together with taurine breeds with an estimated 93% of taurus ancestral alleles. Despite the short period since importation, we detected differentiation (Fst = 0. 049) between the French Charolaise (CHA) and CHCU. However, CHA breed was the closest breed to CHCU followed by other hybrids breed with a clear CHA origin. Linkage disequilibrium (r) decay tends to be lower in CHCU compared to CHA probably due to a less intense artificial selection programs of CHCU. Signals of recent adaptation to tropical conditions between CHCU and CHA were identified. Genes mapping within those regions reflect different functions related to immunity, metabolic changes and heat tolerance (CHCU) and muscle development and meat quality (CHA) that may have had an important role in the phenotypic differentiation of these breeds. Further studies will expand our knowledge on the molecular basis of adaptation of cattle to tropical conditions and molecular process associated with meat quality traits.
Ajuts:	European Commission 6655919
Drets:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Llengua:	Anglès
Document:	Article ; recerca ; Versió publicada
Publicat a:	Scientific reports, Vol. 8 (2018) , art. 11005, ISSN 2045-2322

DOI: 10.1038/s41598-018-29453-z
PMID: 30030481

9 p, 1.3 MB

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